Paper-cutter



(No Model.) 2 Sheets-Sheet 1.

M. T. BALDWIN.

N PETEHQ Phbloimmyiphm Washinglon. QC.

UNITED STATES PATENT. @rrrcs.

MYRON 'l. BALDVIN, OF LA GRANGE, ILLINOIS.

PAPER-CUTTER.

SPECIFICATION forming part of Letters Patent No. 414,669, dated November5, 1889.

Application filed July 24, 1889. Serial llo. 318,590. (No model.)

To [LZZ whom it may concern.-

3e it known that I. Mvnon T. BALDWIN, of La Grange, in the county ofCook and State of Illinois, have invented a new, useful, and ImprovedPaper-Cutter, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, forming apart of this specification, in which l Figure l is a plan View of apaper-cutter embodying my invention. Fig. 2 is a detail view, partly insection, of the swinging paper-holding arm and clamping mechanism. Fig.3 is a front end view of said paper-cutting device. Fig. 4 is asectional view taken upon the line .171 Fig. 3,-viewed in the directionof the arrow there shown; and Fig.5 is a sectional view taken upon theline y y, Fig. 3, viewed as indicated by the arrow.

Like letters of reference in the different figures indicate like parts.

The object of my invention is to provide means for cutting paper intosheets of any desired size, and especially that which has been foldedinto a series of folds from a large sheet for the purpose of beingformed into smaller ones, my purpose being to apply said device moreparticularly to the forming of sheets from sensitized paper'used byphotographers; and as said sheets are liable to curl at the edges, afurther object is to provide means for automatically holding said edgesdown until properly severed by the knife.

To these ends my invention consists in the combination of elementshereinafter more particularly described and claimed.

In the drawings, A represents the frame of my improved paper-cutter,upon one side of which is formed a standard B, to which is hinged aknife C, the cutting-edge of which is adapted to engage with astationary counterpart (I, attached to a vertical flange D, formed uponthe base. Rigidly secured to the base A is a vertical pin 6, upon whichis loosely mounted a sleeve E, having parallel arms E G rigidly attachedthereto or integral therewith, which are arranged one above the otherand adapted to swing laterally, for the purpose hereinafter stated. Uponthe end of the arm E is a head e,-which is bored to receive a loosepintle e Figs. 2, 8, and -l, to the lower end of which is rigidlyattached a plate 6 preferably circular in form. Upon the upper end ofthe pintle, e is a head 6*, Fig. 2, between which and the bottom of thesocket or bore into which the pintle is inserted is interposed a spring6, which serves to raise the pint-1e and normally hold the plate 0 inthe position shown in Fig. 2. A lever f, hinged at the top of the head 6and provided with a cam f in operative engagement with said pintle eserves by its movement to depress or elevate the plate e at will. Uponthe end of the arm G and directly beneath the head 6 is a similar headg, which is bored to receive a loose pintle g, Fig. 2, to which isrigidly attached a plate g which is parallel with the plate e and isadapted to revolve in a horizontal plane. The pintle g is by preferencerounded or tapered at its lower end,'and is adapted to rest upon the endof a set-screw g, tapped into the bore into which said pintle isinserted and secured by means of a lock-nut g The paper H to be cut isfirst folded to the desired size and placed loosely upon the plate g andadjusted thereon so that there may be no unnecessary waste in cuttingwhen it is clamped in place. This result is preferably accomplished asfollows: Upon the opposite side-of the swinging arms from the cutter C,and in operative proximity to the ends of said swinging arms, I place apaper-gage, which consists of a horizontal plate J, detachably securedto an arm a, formed upon the frame, by means of a bolt and thumb-nut j,Figs. 3 and 5. A slot j, Fig. 5, enables the adjustment of said plate tobe varied. The Plate J has formed therein vertical flanges j j arrangedat right angles to each other, each being provided upon the inside witha shoulder 7' and a rabbetj said shoulders being of such a height as toenable the top of the plate g to be flush therewith, while the edges ofthe plate rest against said shoulder. The projecting edges of the papercan then rest againstsaid rabbets. which causes it to assume the properposition with relation to the plate 9 the edges ofthe paper beingparallel therewith, as indicated in dotted lines in Fig. 1. The paper isthen securely clamped, when, the knife 0 being elevated, the arms E Gare swung laterally, so as to bring the edge of the plate 9 against thestationary cutter (I, over ICO which the edges of the paper project, asshown in Fig. 3. Holding the plate g firmly against said stationarycutter d, one edge of the paper is trimmed by depressing the knife. Theclamping-plates are then turned upon their axes a quarter of arevolution and pressed against said cutter, which serves as a gagetherefor, when another cut is made, the

in position to be clamped for cutting, it is ob-' vious that it may bedispensed with and that good results'may with care be obtained withoutit. may be removed from the pin e, which enables others to besubstituted therefor having varying-sized plates g to conform to thesize to which it is desirable to cut the paper; or

the plates 9 alone may be interchanged by merely removing one from thehead 9 and replacing it with another of the desired size.

Having thus described my invention, I claim 1. In a paper-cuttingdevice, the combination, with cutting-blades, of swinging arms havingparallel revoluble paper-clamping plates thereon, whereby the respectiveedges The sleeve E is made detachable and of the folded and clampedpaper may be accurately presented to the cutters, substantially as shownand described.

2. In a paper-cutter, the combination, with laterally-swinging arms, ofparallel revolnble clamping-p1ates for clamping the folds of the paper,and a gage consisting of shouldered vertical flanges arranged at rightangles to each other, whereby one of said clampingplates may restagainst the shoulders of said flanges, while the edges of the paper maybe caused to projectagainst the rabbets thereof, substantially as shownand described.

3. The combination, in a paper-cutting device, of cuttingblades,laterally-swinging arms, revoluble clamping-plates, means forcompressing one against the other, and a paper-adjusting gage consistingof vertical rabbeted flanges arranged at right angles to each other,substantially as shown and described.

at. The combination, in'a paper-cutting de-' vice, of cuttingblades,laterally-swinging arms arranged one above the other, revolubleclamping-plates, means for con'ipressing the same one against the other,and a spring arranged parallel to the movable cutter and beneath itsedge, substantially as shown and described.

5. In a paper-cutter, the combination of the cutters 0 cl,laterally-swinging arms E G, clamping-plates 6 9 cam f, and lever f,substantially as shown and described.

MYRON T. BALDWVIN.

Witnesses:

D. H. FLETCHER, J. HALPENNY.

